Side bearing for railway cars



Feb"- 1 1927' H. M. PERRY SIDE BEARING FOR RAILWAY CARS Filed Jan28,1924

Patented Feb.' 1, 1927.

UNITE-D? HUBERT M: PERRY; or cIIIcAeo, ILLINOIS, Assienon 'ro serene L.woo'ns, or

CHICAGO, ILLINOIS/ sameness ron Renae was.

This invention relates to improvements in side bearings for railwaycarsandconsist's of'the" matters hereinafter d'es'cr1bed"an'cl moreparticularly pointed out in the" ap} pended claim.

The invention' is'addressed to thetypefof' with a'bear'ingfplalteinthebottom and a roller adapted to roll on saidbearing plater-esaidroller being overwei'gh ted on one side engagement with the opposedbearing "plate gravity to a central;position-in theorising: being guidedthereto interengaging lugs and recesses provided respectively on theroller and in the side walls of the casing.

While the action of gravity on the roller alone will act to return it tocentral position, this movement of the roller is apt to be sluggish inbearings as heretofore made, particularly when cinders and dustaccumulate in the casing, and the object of the present invention is toprovide additional means coacting with the overweighted roller toincrease its tendency towards, and speed up its movement when releasedfrom load in its return to, the center of the casing.

The advantages of the invention will ap pear more clearly as I proceedwith my specification.

In the drawings Fig. 1 represents a top plan View of the improvedbearing, one end wall of the casing being partly broken away.

Fig. 2 is a view representing a side elevation partly in longitudinalcentral section.

Fig. 3 is a view representing a transverse section through the bearingin a plane indicated by the line 33 of Fig. 2.

Fig. 4 is a sectional viewsimilar to the sectional part of the viewshownin Fig.2, showing a somewhat modified form of the bearing.

Referring now to that embodiment of the invention illustrated in thedrawings and particularly in Figs. 1 to 3 thereof :10 indicates thecasing, which is a rectangular open top frame having side walls 11, 11and end walls 12 with I integral; laterally eX- ten'dingyears oi -flugs18, 13 for securing it to the truck bolster. The bottomof the easingjisclosed fillerplate ll upon which rests a"bearing oifwear"plate 15." Bothof these plates areinsert-able in the bottomof the casing from below ina familiar manner and are held therein by bendable flanges 16 at tlie'endsfo f the 'opening inthe bottom of the casing," and against:shoulders in the'side walls of tliecasing' which engage thetop wall ofthe bearingplate. The"; g bearing "platel'15 rises fro n the middle ofis to say when" disengaged from hearing the" casing towards each" end,having as" shown, a curved top surface 18.

19 indicates the 'antifriction member or roller. Said roller is 'wide'atthe bottom and'marrow at" the "top, the bottom bearing surface 20 beingmade on a large radius and the top bearing surface 21 being made on asmaller radius. This provides an ample overweight for the roller so thatits tendency will always be to return to a position with its longestmedian line in vertical position. In the side walls of the casing areprovided V-shaped recesses 22 and the anti- :t'riction roller has lugs23 at its end engaged in said recesses,the sides of therecesses and thelateral edges of the lugs being so formed and proportioned relative tothe contemplated movement of the antifriction roller from its centralposition to the predetermined limit of its movement toward either end ofthe casing that they will guide the roller in its movement and hold itagainst bodily shifting on the bearing plate under end jars or shocks tothe casing.

of Fig. 2 that when the roller, by the engagement of the opposed bolsterbearing plate (indicated at 24) with its top side, has been rotated toone end of the casing, as indicated in dotted lines, a release of theroller by the bolster bearing plate will permit the roller to roll downthe inclined bearing plate towards the middle of the casing. Thisrolling movement is brought about not only by the overweight of theroller due to its formation but also by. the inclination of the bearingplate downwhich it rolls. Thus a quick and rapid return of the rollertoits central position is assured.

v The greatest width of the lugs 23 is made at right angles to thegreatest diameter of the roller, so that the roller Will not only alwaysreturn to its central position, but its greatest diameter will bereturned to central position in the casing in a vertical position.

As Will be readily understood, the roller will tend to increase thedistancebetween the truck and body bolster as it rolls from centralposition to either end of the casing, as indicated by the full line andthe dotted line showing the position of the body bearing plate 24;. Butmanifestly, if such lifting of the body bolster is undesirable and thebody and truck bolsters are intended to be maintained in parallelrelation during the bearing engagement of the antifriction device, thisresult may be readily produced by so forming the top bearing surface ofthe roller, as indicated at 21* in Fig. 4, that the rise of the rollerdue to the upward inclination of the bearing plate 15, Will becompensated for. That is to say, said top bearing surface is so curvedwith reference to the curvature of the bottom bearing surface, that thevertical distance between the bearing points at top and bottom of theroller in the plane of the load, as indicated by the line 25 at thecenter of the casing, Will decrease as it approaches the end of the casing in proportlon to the rise of the bearing plate, as indicated by theline 25*, with the 4 roller at the end of the casing.

IVhile in describing my invention I have referred to several details ofmechanical construction and arrangement of parts, it is to be understoodthat the invention is not limited thereto except as mav be pointed outin the appended claim.

I claim as my invention:

In a side bearing for railroad cars, an open top casing, a bearing platein said casing inclined from the middle of the casing upwardly towardsthe ends of the casing, an antifriction roller capable of rolling movement on said bearing plate, said roller being in cross section Wide atthe bottom and narrow at the top, the top and bottom bearing surface ofsaid roller being so formed that the distance between the top and bottombearing points of the roller on the load line as the roller assumesdifferent positions in its rolling movement towards the end of thecasing is diminished in proportion to the rise of the bearing plate, andinterengaging parts on said roller and said casing to guide the rollerin its rolling movement.

In testimony that I claim the foregoing as my invention, I afiix mysignature, this 23d day of January A. D. 1924.

HUBERT M. PERRY.

